Outbreak Watch

US measles outbreaks: 10 Nov 2026

The summary as it stood at the end of this day.

Status: Outbreak growing Summary written

US measles cases surpass 5,000 as state health departments report new cases and deaths

Is it spreading to new areas?

Spread confirmed

As of 10 November 2026, health officials confirmed new measles cases in Bucks County, Pennsylvania, and Macon County.

Sources: NBC10 PhiladelphiaFOX 29 PhiladelphiaCBS News

Key figures

FigureValueBasisAs ofSources
Total US cases in 2026
Reported by the CDC across 45 states; CIDRAP reported over 5,100 cases.
Over 5,000OfficialSources: ABC NewsThe Washington PostAl JazeeraCIDRAP
Pennsylvania measles cases
Stated by the Pennsylvania Department of Health.
Over 1,500Press reportsSources: ReutersU.S. News & World ReportThe Philadelphia Inquirer
Lancaster County measles cases
Stated by local health officials.
Over 500OfficialSources: LNP | LancasterOnlineLNP | LancasterOnline 2
Pennsylvania measles deaths
Confirmed by Pennsylvania health officials.
6OfficialSources: The Washington PostCBS NewsNBC10 PhiladelphiaThe Philadelphia InquirerPennLive
Wisconsin infant measles deaths
Reported by Wisconsin health officials.
1OfficialSources: U.S. News & World ReportReutersThe Washington Post

Who says what

WhoSaysDateSources
Centers for Disease Control and Prevention (CDC)The agency stated it will not alter its measles response even if the United States loses its measles elimination status.Sources: Reuters
Pan American Health Organization (PAHO)Leaders are meeting to evaluate whether the United States retains its measles elimination status.Sources: The Philadelphia InquirerCIDRAPABC News
Pennsylvania Department of HealthConfirmed state measles cases surpassed 1,500 across 45 counties, with six confirmed measles-related deaths.Sources: ReutersNBC10 PhiladelphiaThe Philadelphia Inquirer
Wisconsin Department of HealthReported an infant death linked to the state's measles outbreak, marking Wisconsin's first measles death since 1990.Sources: U.S. News & World ReportReutersThe Washington Post

Summary

As of 10 November 2026, health officials have confirmed new measles cases in Bucks County, Pennsylvania, and Macon County, while national case counts in the United States have surpassed 5,000 across 45 states. The Centers for Disease Control and Prevention reported that the 2026 total is the highest annual count in the country since 1991.

In Pennsylvania, total confirmed cases have exceeded 1,500 across 45 counties, with Lancaster County surpassing 500 cases. State health officials have confirmed six measles-related deaths in Pennsylvania, while an infant death was reported in Wisconsin and a child death in New York. The Pan American Health Organization is meeting to evaluate whether the United States retains its measles elimination status.

Timeline

  1. A child in Lewis County, New York, dies after contracting measles.
    Sources: WGRZ
  2. Pennsylvania health officials confirm a sixth measles-related death as Lancaster County cases exceed 500.
    Sources: The Philadelphia InquirerLNP | LancasterOnline
  3. Wisconsin health officials report the death of an infant from measles, the state's first measles fatality since 1990.
    Sources: U.S. News & World ReportThe Washington Post
  4. The CDC reports total US measles cases in 2026 have surpassed 5,000 across 45 states.
    Sources: ABC NewsReuters
  5. The Pennsylvania Department of Health reports state measles cases have surpassed 1,500, while PAHO reviews US elimination status.
    Sources: ReutersThe Philadelphia Inquirer
  6. Bucks County health officials confirm the county's first measles case, and the CDC director states agency response will remain unchanged regardless of elimination status.
    Sources: NBC10 PhiladelphiaReuters

Still unknown

Reporting published on 10 Nov 2026

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